KTM 250 SX-F 2005, Repair Manual

Page: 96 / 125

8-5
– Turn the carburetor around, remove the 3 screws and remove the
cover of the accelerator pump.
NOTE: When dismounting the cover, watch out for the spring and the
sealing rings as they may get lost easily.
– Remove the 2 sealing rings, the spring and the diaphragm from the
pump housing.
– Remove the screws on the float chamber and remove the housing.
– Pull out the float hinge pin
1
and remove the float together with the
float needle valve.
– Remove the main jet
2
.
– Remove the screw
3
and use pliers to carefully extract the seat of
the float needle valve from the carburetor.
– Screw out the idling jet
4
, the starting jet
5
and the needle jet
6
.
– Turn in the mixture control screw
7
down to the stop, count the
number of turns and write it down.
– Turn out the mixture control screw and dismount it together with the
spring, the washer, and the O-ring.
NOTE: The spring, the washer, and the O-ring will usually remain in the
bore. These parts can be removed with the help of compressed air.
1
2
4
3
5
7
6